Thousands of gold: The gold content is not less than 999. The marks on jewelry are "Thousands of Gold", "Gold 999", "G999", "AU999". Thousands of gold is the highest in the naming of jewelry. The gold: The gold content is not less than 990. The marks on the jewelry are "Foot Gold", "Gold 990", "G990", "AU990", and the gold and gold jewelry are high in gold and golden. On the one hand, the foot gold is used as a decoration, and it is also used as a value preservation or evil spirits. The disadvantage of thousands of gold and foot gold jewelry is that the hardness is low, easy to wear, and it is not easy to maintain fine patterns. Gold alloy: Gold alloy (K gold) jewelry overcomes the shortcomings of poor hardness, single color, easy wear, and unspoken patterns. A series of K gold jewelry was formed. color K gold: In addition to 750 ‰ of gold in 18K gold, the different ratio of other ingredients will make K gold show different colors. The development of science and technology can now be prepared into gold alloy of various colors. Extension information: Gold (GOLD) is a single -quality form of chemical element gold (chemical element symbol AU). It is a soft, golden, corrosive precious metal. Gold is one of the rare, precious and extremely valued metals. Internationally, gold is generally based on ounces. In ancient China, "two" as a gold unit, a very important metal. Reference materials: What are the types of gold?
Gold can be divided into sufficient gold and thousands of gold. This gold and thousands of gold represent the purity of gold. Thousands of gold are the highest purity (generally there are marks such as 999 9999) platinum markers are PT, but PD is gold, which is cheaper than platinum. For example, the PT950, the front PT indicates that it is made of platinum, and the 950 behind it represents its purity of gold. The platinum is 990, which improves the purity. The expansion information: In fact, 100%pure gold does not exist. The first reason is that in the refinement technology, the other is because the gold jewelry or gold bars must use the gold jewelry at the process of processing. In the processing of gold jewelry, the welds used are composed of specific alloy materials. The composition of itself is mainly gold, and it contains a small amount of silver, copper or tin. In experts, soldering is divided into three types: high welding, medium welding and low welding, and the gold content is 940 ‰, 920 ‰, and 840 ‰. Foot gold and thousands of gold jewelry generally use welds with gold content of more than 90%to ensure the goldenness of the jewelry. Its welded proportion is about 0.2%. The content of welded in other K gold jewelry is slightly higher, but it will not exceed 8%. Reference materials: Gold (precious metal) _ 百度 贴
People often mention precious metals, but they do not know the types of precious metals. In fact, there are quite a few types of precious metals on the market. Among them, gold and silver metals are known by the public. Some metals have some metals. There are fewer people, so few people know, such as some uncommon metal, 钯, platinum, etc., all of which are collectively referred to as platinum metals. What we call precious metals actually refers to the three categories of metal elements: platinum metal elements, silver elements, and gold elements. These metals are still very resistant to chemical reactions, and they will not easily develop chemical reactions under normal circumstances. The golden metal element gold refers to gold. It is no exaggeration to say that gold is a representative of the human development of a civilized society, because in ancient times, gold was believed by people, thinking it was a symbol of honor. In fact, these have a lot of basis, because the golden brilliant color of gold is formed pure naturally, which is also the best for the preservation of gold. And because of the good ductility of gold, gold has always occupied a pivotal position in the precious metal market. The types of precious metal investment can be used in more precious metals, all of which are financial derivatives of precious metals. The precious metal investment varieties common in the category of precious metal investment are: gold spot, silver spot, London gold, Tiantong gold, Auto D, AGT d, futures gold, paper gold, silver, platinum, 钯 gold, etc. The variety of transactions due to different varieties, but the margin ratio of margin transactions (electronic disk transactions) of this type of precious metal will be different. Considering that risk control and insufficient professional knowledge of most investors, in order to protect the interests of individual investors, the margin ratio of each exchange is: 5%-20%of the first-line range. The types of precious metal investment can be used for investing in more precious metals, all of which are financial derivatives of precious metals. They have previously introduced physical gold and silver, paper gold opened by gold, and silver silver and gold (T. T D) Investment varieties that extended transactions with Silver (T D), the following focuses on introducing platinum investment and silver investment.
Gold can be divided into sufficient gold and thousands of gold. This gold and thousands of gold represent the purity of gold. Thousands of gold are the highest purity (generally there are marks such as 999 9999) platinum markers are PT, but PD is gold, which is cheaper than platinum. For example, the PT950, the front PT indicates that it is made of platinum, and the 950 behind it represents its purity of gold. The platinum is 990, which improves the purity.
The expansion information: Gold (GOLD) is a single -quality form of chemical element (AU). It is a soft, golden, corrosive precious metal. Gold is one of the rare, precious and extremely valued metals. Internationally, gold is generally based on ounces. In ancient China, "two" as a gold unit, a very important metal. It is not only a special currency for reserves and investment, but also an important material for the jewelry, electronics, modern communications, aerospace and air industry and other departments. The chemical symbols of gold are AU, and the English code in finance is XAU or GOLD. The name of the AU comes from a story of the goddess of dawn in Roman mythology, which means the shining dawn. As of October 12, 2021, the price of gold was $ 1760/ounce. F folding physical properties 1, color: The steam emitted when gold is melted is green; its gold powder is usually brown during the smelting process; if it is cast into a thin piece It can also transmit green light. Gold 2, ductility: is extremely strong. 1 ounce of gold can be pulled into 50 miles long, and its ductility makes it easy to cast and is a good choice for making jewelry. Gold is the strongest in the metal. 3, forgedness: INO. It can cause extremely thin and easy to roll up. 1 ounce of gold can be hammered to 1) of 1 tenth of 4 million and 100 square meters. The area is large. The ancients hammered it into thin slices to decorate the temples and the palace. These can explain the strong flexibility and forgedness of gold. The color of gold is golden yellow, metal luster, difficult to break down. The hardness is 2-3, the pure gold is 19.3, and the melting point is 1064.4 ° C; it has good ductility and can be pressed into thin foil. It has high heat transfer and conductivity. The resistance of pure gold is 2.4P. Pure gold has good anti -chemical corrosion and is the best electroplating material. Gold, as a precious metal, has good physical characteristics. "Real Gold is not afraid of fire" means that the gold under the general flame is not easy to melt. The density is strong and the feel is heavy. Good toughness and ductility, good guidance. Pure gold has gorgeous yellow, but after incorporating other metals, the color changes greatly. For example, gold and copper alloy are dark red, and the silver alloy is light yellow or gray -white. Jin Yi was grinded into powder, which is why Jin is scattered in nature. Pure gold jewelry is also easily worn and reduced. The atomic order in the Menjiev cycle table is 79, that is, the golden nucleus of the gold contains 79 protons, and the proton belt is positive. At the same time, due to the conformity of half full rules, gold has good chemical stability. In the metal market, metals such as crickets, 铑, 钯, 锇, 铱, and platinum are collectively referred to as precious metals. although gold is a very soft metal, it is not as good as lead and tin metal. Use nails on pure gold to draw traces. This softness makes gold very easy to process. However, this point is not ideal for the maker of the decoration, because it is easy to make the decorations hurt and make it make it make it wound and make it it. Lost luster and even affect beauty. Therefore, when making jewelry with gold, copper and silver are generally added to improve their hardness.
Thousands of gold: The gold content is not less than 999. The marks on jewelry are "Thousands of Gold", "Gold 999", "G999", "AU999". Thousands of gold is the highest in the naming of jewelry.
The gold: The gold content is not less than 990. The marks on the jewelry are "Foot Gold", "Gold 990", "G990", "AU990", and the gold and gold jewelry are high in gold and golden. On the one hand, the foot gold is used as a decoration, and it is also used as a value preservation or evil spirits. The disadvantage of thousands of gold and foot gold jewelry is that the hardness is low, easy to wear, and it is not easy to maintain fine patterns.
Gold alloy: Gold alloy (K gold) jewelry overcomes the shortcomings of poor hardness, single color, easy wear, and unspoken patterns. A series of K gold jewelry was formed.
color K gold: In addition to 750 ‰ of gold in 18K gold, the different ratio of other ingredients will make K gold show different colors. The development of science and technology can now be prepared into gold alloy of various colors.
Extension information:
Gold (GOLD) is a single -quality form of chemical element gold (chemical element symbol AU). It is a soft, golden, corrosive precious metal. Gold is one of the rare, precious and extremely valued metals. Internationally, gold is generally based on ounces. In ancient China, "two" as a gold unit, a very important metal.
Reference materials: What are the types of gold?
Gold can be divided into sufficient gold and thousands of gold.
This gold and thousands of gold represent the purity of gold.
Thousands of gold are the highest purity (generally there are marks such as 999 9999) platinum markers are PT, but PD is gold, which is cheaper than platinum. For example, the PT950, the front PT indicates that it is made of platinum, and the 950 behind it represents its purity of gold.
The platinum is 990, which improves the purity.
The expansion information:
In fact, 100%pure gold does not exist. The first reason is that in the refinement technology, the other is because the gold jewelry or gold bars must use the gold jewelry at the process of processing.
In the processing of gold jewelry, the welds used are composed of specific alloy materials. The composition of itself is mainly gold, and it contains a small amount of silver, copper or tin.
In experts, soldering is divided into three types: high welding, medium welding and low welding, and the gold content is 940 ‰, 920 ‰, and 840 ‰. Foot gold and thousands of gold jewelry generally use welds with gold content of more than 90%to ensure the goldenness of the jewelry. Its welded proportion is about 0.2%. The content of welded in other K gold jewelry is slightly higher, but it will not exceed 8%.
Reference materials: Gold (precious metal) _ 百度 贴
People often mention precious metals, but they do not know the types of precious metals. In fact, there are quite a few types of precious metals on the market. Among them, gold and silver metals are known by the public. Some metals have some metals. There are fewer people, so few people know, such as some uncommon metal, 钯, platinum, etc., all of which are collectively referred to as platinum metals. What we call precious metals actually refers to the three categories of metal elements: platinum metal elements, silver elements, and gold elements. These metals are still very resistant to chemical reactions, and they will not easily develop chemical reactions under normal circumstances.
The golden metal element gold refers to gold. It is no exaggeration to say that gold is a representative of the human development of a civilized society, because in ancient times, gold was believed by people, thinking it was a symbol of honor. In fact, these have a lot of basis, because the golden brilliant color of gold is formed pure naturally, which is also the best for the preservation of gold. And because of the good ductility of gold, gold has always occupied a pivotal position in the precious metal market.
The types of precious metal investment can be used in more precious metals, all of which are financial derivatives of precious metals. The precious metal investment varieties common in the category of precious metal investment are: gold spot, silver spot, London gold, Tiantong gold, Auto D, AGT d, futures gold, paper gold, silver, platinum, 钯 gold, etc.
The variety of transactions due to different varieties, but the margin ratio of margin transactions (electronic disk transactions) of this type of precious metal will be different. Considering that risk control and insufficient professional knowledge of most investors, in order to protect the interests of individual investors, the margin ratio of each exchange is: 5%-20%of the first-line range.
The types of precious metal investment can be used for investing in more precious metals, all of which are financial derivatives of precious metals. They have previously introduced physical gold and silver, paper gold opened by gold, and silver silver and gold (T. T D) Investment varieties that extended transactions with Silver (T D), the following focuses on introducing platinum investment and silver investment.
Gold can be divided into sufficient gold and thousands of gold.
This gold and thousands of gold represent the purity of gold.
Thousands of gold are the highest purity (generally there are marks such as 999 9999) platinum markers are PT, but PD is gold, which is cheaper than platinum. For example, the PT950, the front PT indicates that it is made of platinum, and the 950 behind it represents its purity of gold.
The platinum is 990, which improves the purity.
The expansion information:
Gold (GOLD) is a single -quality form of chemical element (AU). It is a soft, golden, corrosive precious metal. Gold is one of the rare, precious and extremely valued metals. Internationally, gold is generally based on ounces. In ancient China, "two" as a gold unit, a very important metal. It is not only a special currency for reserves and investment, but also an important material for the jewelry, electronics, modern communications, aerospace and air industry and other departments.
The chemical symbols of gold are AU, and the English code in finance is XAU or GOLD. The name of the AU comes from a story of the goddess of dawn in Roman mythology, which means the shining dawn.
As of October 12, 2021, the price of gold was $ 1760/ounce.
F folding physical properties
1, color:
The steam emitted when gold is melted is green; its gold powder is usually brown during the smelting process; if it is cast into a thin piece It can also transmit green light. Gold
2, ductility:
is extremely strong. 1 ounce of gold can be pulled into 50 miles long, and its ductility makes it easy to cast and is a good choice for making jewelry. Gold is the strongest in the metal.
3, forgedness:
INO. It can cause extremely thin and easy to roll up. 1 ounce of gold can be hammered to 1) of 1 tenth of 4 million and 100 square meters. The area is large. The ancients hammered it into thin slices to decorate the temples and the palace. These can explain the strong flexibility and forgedness of gold.
The color of gold is golden yellow, metal luster, difficult to break down. The hardness is 2-3, the pure gold is 19.3, and the melting point is 1064.4 ° C; it has good ductility and can be pressed into thin foil. It has high heat transfer and conductivity. The resistance of pure gold is 2.4P. Pure gold has good anti -chemical corrosion and is the best electroplating material.
Gold, as a precious metal, has good physical characteristics. "Real Gold is not afraid of fire" means that the gold under the general flame is not easy to melt. The density is strong and the feel is heavy. Good toughness and ductility, good guidance. Pure gold has gorgeous yellow, but after incorporating other metals, the color changes greatly. For example, gold and copper alloy are dark red, and the silver alloy is light yellow or gray -white. Jin Yi was grinded into powder, which is why Jin is scattered in nature. Pure gold jewelry is also easily worn and reduced.
The atomic order in the Menjiev cycle table is 79, that is, the golden nucleus of the gold contains 79 protons, and the proton belt is positive. At the same time, due to the conformity of half full rules, gold has good chemical stability. In the metal market, metals such as crickets, 铑, 钯, 锇, 铱, and platinum are collectively referred to as precious metals.
although gold is a very soft metal, it is not as good as lead and tin metal. Use nails on pure gold to draw traces. This softness makes gold very easy to process. However, this point is not ideal for the maker of the decoration, because it is easy to make the decorations hurt and make it make it make it wound and make it it. Lost luster and even affect beauty. Therefore, when making jewelry with gold, copper and silver are generally added to improve their hardness.